docs: add README

LICENSE

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 The MIT License (MIT)
 
-Copyright (c) 2022 YOUR_NAME_HERE
+Copyright (c) 2022 SerKo
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in

README.md

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+# Holy
+
+A simple and clean Hugo theme.
+
+## Features
+
+- Homepage with list of posts.
+- RWD design for optimized mobile layout.
+- Syntax highlighting with customizable theme.
+- Using [Master Styles](https://github.com/master-co/styles) with zero CSS files.
+
+## Install
+
+```
+git submodule add https://github.com/serkodev/holy.git themes/holy
+```
+
+```
+hugo server -t holy
+```
+
+## LICENSE
+
+MIT